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Finding the Fourth Proportional to 9,998.70, 13,798.03 and 5,522.51

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Solution

The fourth proportional to 9,998.70, 13,798.03 and 5,522.51 is: 7,620.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.70 : 13,798.03 = 5,522.51 : x
  2. Step 2: Convert to fraction form
    9,998.70/13,798.03 = 5,522.51/x
  3. Step 3: Cross multiply
    9,998.70x = 13,798.03 × 5,522.51
  4. Step 4: Simplify right side
    9,998.70x = 76,199,758.66
  5. Step 5: Solve for x
    x = 76,199,758.66/9,998.70
  6. Step 6: Final answer
    x = 7,620.97

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.